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<html><head><title>R: Heating System Choice in California Houses</title>
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<table width="100%" summary="page for Heating"><tr><td>Heating</td><td align="right">R Documentation</td></tr></table>

<h2>Heating System Choice in California Houses </h2>

<h3>Description</h3>


<p>a cross-section
</p>
<p><EM>number of observations</EM> :  900
</p>
<p><EM>observation</EM> :  households
</p>
<p><EM>country</EM> :  California
</p>


<h3>Usage</h3>

<pre>data(Heating)</pre>


<h3>Format</h3>

<p>A dataframe containing :
</p>

<dl>
<dt>idcase</dt><dd><p>id</p>
</dd>
<dt>depvar</dt><dd><p>heating system, one of gc (gas central), gr (gas room), ec (electric central), er (electric room), hp (heat pump)</p>
</dd>
<dt>ic.z</dt><dd><p>installation cost for heating system z (defined for the 5 heating systems)</p>
</dd>
<dt>oc.z</dt><dd><p>annual operating cost for heating system z (defined for the 5 heating systems)</p>
</dd>
<dt>pb.z</dt><dd><p>ratio oc.z/ic.z </p>
</dd>
<dt>income</dt><dd><p>annual income of the household</p>
</dd>
<dt>agehed</dt><dd><p>age of the household head</p>
</dd>
<dt>rooms</dt><dd><p>numbers of rooms in the house</p>
</dd>
</dl>



<h3>References</h3>


<p>Kenneth Train's home page :  <a href="http://elsa.berkeley.edu/~train/">http://elsa.berkeley.edu/~train/</a>.
</p>


<h3>See Also</h3>

<p><code>Index.Source</code>, <code>Index.Economics</code>, <code>Index.Econometrics</code>, <code>Index.Observations</code></p>


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